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To clarify: Assume the OP's parent company is "Acme Widgets" and has a Google + Busines page for "Acme Widgets".  He has established rel="publisher" between this business profile, and the "Acme Widgets" main company website. Now 6 months later Acme Widgets opens up a new website -- "The Widget Training Site" -- which is a separate site, but falls under the "Acme Widget" umbrella. Can the OP also add "The Widget Training Site" to the "Acme Widgets" Google + Page?  I've tried to so something similar, and I can only link one website to one google + page. Or is there a way to add multiple sites to one google + business page. Thanks for your insight!